Steam cabbage leave in a steamer for about 10 minutes or until wilt. Set aside.
Grind chicken breast with soy sauce, sesame oil, garlic, cornstarch, salt and pepper with a chopper until smooth. Transfer to a bowl.
Lay the steamed leaf in a working surface, place about 1 tbsp filling in the center of cabbage leaf then roll over the filling until everything rolled up and tucked inside.
Place the cabbage roll to a steamer and steam for 15 minutes.
Put all the sweet and spicy chili sauce ingredients except cornstarch to a chopper, then grind until finely chopped.
Pour the mixture to a saucepan and bring to simmer over medium high heat. In a small mixing bowl, combine cornstarch with 2 tbsp water then add it to a simmering sauce. Stir frequently until the sauce is thickened. Turn off the heat.
Place the steamed chinese cabbage roll to a serving plate, then pour the sauce over it. Enjoy!